The Mechanism behind Vibration Assisted Fluidization of Cohesive Micro-Silica
Rens Kamphorst (TU Delft - ChemE/Product and Process Engineering)
P. Christian van der Sande (TU Delft - ChemE/Product and Process Engineering)
Kaiqiao Wu (TU Delft - ChemE/Product and Process Engineering)
E. C. Wagner (TU Delft - ChemE/O&O groep)
M. Kristen David (TU Delft - ChemE/O&O groep)
GMH Meesters (TU Delft - ChemE/Product and Process Engineering)
Jan Rudolf Van Ommen (TU Delft - ChemE/Product and Process Engineering)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Vibro-assisted fluidization of cohesive micro-silica has been studied by means of X-ray imaging, pressure drop measurements, and off-line determination of the agglomerate size. Pressure drop and bed height development could be explained by observable phenomena taking place in the bed; slugging, channeling, fluidization or densification. It was observed that channeling is the main cause of poor fluidization of the micro-silica, resulting in poor gas-solid contact and little internal mixing. Improvement in fluidization upon starting the mechanical vibration was achieved by disrupting the channels. Agglomerate sizes were found to not significantly change during experiments.
help_outline